Could this be anything other than a Gray-cheeked Thrush? We get many Swainson's Thrush but this is so different. Recorded in Victor, MT, 9/14/17, ~5:45am. It would be a first for us since we began monitoring in 2012. Also, I could not find any records of GCTH west of the Montana continental divide in either eBird or the MT Natural Heritage Program database. So if it is, a very exciting record for us!
Thanks in advance for any guidance!